Class 06 ACTIVITY – UNDERSTANDING ELEMENTARY SHAPES

 ACTIVITY – UNDERSTANDING ELEMENTARY SHAPES

Objective: 

To illustrate the basic geometrical shapes with set-squares.

Materials Required : 

Chart paper, geometry box, Five set -squares (30 ° -60 °-90 °), 

five set-squares (45 °-45 °-90 °), ruler, pencil

To make a rectangle with the help of two set-squares (30 ° -60 °-90 °)

Procedure:

Take two set-squares (30 ° -60 °-90 °) as shown in Fig. 1.

Place the two set-squares as shown in Fig. 2. It will produce a figure ' ABCD'.

ACTIVITY – UNDERSTANDING ELEMENTARY SHAPES

3. Measure the sides AB, BC, CD and AD with the help of a ruler as shown in Fig. 3 (i), (ii), (iii) and (iv).

You will find that AB = CD and BC = AD.

4. Similarly, measure AC and BD with the help of a ruler. You will find AC = BD.

ACTIVITY – Understanding Elementary Shapes

II. To make a square waith the help of two set-squares (45 ° -45 °-90 ").

Procedure:

1. Take two set-squares (45 °-45 °-90") as shown in Fig

2. Place the two set-squares as shown in Fig. Name the shape as PQRS.

3. Measures the sides PQ, QR,RS and SP with the help of a ruler as shown in fig.

 you will find that PQ = QR= RS = SP

ACTIVITY – Understanding Elementary Shapes

3. Measures the sides PQ, QR,RS and SP with the help of a ruler as shown in fig.

 you will find that PQ = QR= RS = SP.

4. Similarly, measure PR and QS with the help of a ruler. You will find that PR = QS.

ACTIVITY – Understanding Elementary Shapes

Question 6

III. To make a rhombus with the help of 4 set – squares (30 ° -60 °-90 °).

Procedure : 

Place the 4 set – squares (30 ° -60 °-90 °) as shown in fig. It will produce EFGH.

Measure all the sides EF, FG,GH and EH as shown in fig.

You will find that EF = FG = GH = EH. 

3. Similarly measure EG and FH. You will find that EG ≠ FH.

ACTIVITY- Understanding Elementary Shapes

IV. To make a trapezium with the help of 3 set-squares (30 ° – 60 ° – 90 °).

Procedure:

Take a rectangle made with 2 set-squares and join one set-square at the side of rectangle as shown in Fig. Name the figure produced as ABCD.

2. Measure the sides AB, BC, CD and AD with the help of a ruler. ABCD is the required trapezium.

 

ACTIVITY- Understanding Elementary Shapes

V. To  make a  parallelogram with the help of 2 set-squares (30° -60° - 90 °) 

Procedure:

Place the 2 set -squares (30 ° – 60 ° – 90 °) as shown in fig. Name the figure so obtained as ABCD.

2. Measure the sides AB, BC, CD and AD with the help of a ruler. You will find that, AB = CD and BC = AD  ABCD is the required parallelogram.